Current evidence indicates that PGC-1α upregulation may serve as a potent therapeutic approach against development and progression of neuronal damage. Remarkably, increasing evidence shows that PGC-1α deficient mice have neurodegenerative diseases-like features, as well as neurological abnormalities. Finally, we discuss recent studies showing novel specific PGC-1α isoforms in the central nervous system that appear to exert a key role in the age of onset of neurodegenerative diseases and have a neuroprotective function in the central nervous system, thus opening a new molecular strategy for treatment of neurodegenerative diseases. The purpose of this review is to provide an up-to-date overview of the PGC-1α role in the physiopathology of neurodegenerative diseases, as well as establish the importance of PGC-1α function in synaptic transmission and neuronal survival.RuBisCO (Ribulose 1,5 bisphosphate carboxylase/oxygenase) by virtue of its dual specificity towards oxygen and carbon dioxide is an important rate-limiting step in photosynthesis and is believed to be the key factor for limited productivity of higher plants and algae. The photoautotrophic growth rate of cyanobacteria is a culmination of several factors including, rates of photosynthetic reactions, stress combating mechanisms and basic biomass generation metabolism in combination with optimal nutrient availability, irradiance, gaseous environment, etc. In case of cyanobacteria, the effect of RuBisCO in affecting the multiplication rate has been observed to show varied response. The current paper presents the RuBisCO activity of an early diverging cyanobacterium, Gloeobacter violaceus PCC 7421 and also compares the growth rates and RuBisCO activity of various cyanobacteria. A spectrophotometric estimation in a coupled enzyme assay system of the heterologous expressed G. violaceus PCC 7421 RuBisCO in E. coli, upon purification, revealed a carboxylation activity of LSu to be 5 nMol of phosphoglycerate min-1 mg-1 of protein, which is in coherence with the organism's slow growth rate. Further, the in vitro complementation of RbcL with RbcS in presence of RbcX of G. violaceus facilitated partial reconstitution of the protein and was hence found to cause a four-fold enhancement in its specific activity. The unique characteristics of the primitive cyanobacteria, such as, absence of thylakoids, lack of several photosystem constituting genes, slow carboxylation rate, pose limitation for its rapid multiplication. The RuBisCO carboxylation rate is observed as not the sole but an important parameter for obtaining optimal cell multiplication rates in photo-autotrophically multiplying cyanobacteria.Glioblastoma multiforme (GBM) is the most aggressive and prevalent brain tumor in adults. The circRNA derived from CLSPN (hsa_circ_0011591, circCLSPN) is remarkably upregulated in GBM; however its functional role was uncovered yet. First, we examined expression of circCLSPN using GSE109569 database and RT-qPCR, and circCLSPN level was upregulated in human GBM tumor tissues and cells (A172 and LN18); moreover, circCLSPN showed a stable structure stability. Then, a series of loss-of-functional experiments were performed using CCK-8 assay, colony formation assay, flow cytometry, scratch wound assay, and transwell assay. Consequently, circCLSPN silencing suppressed cell viability, colony formation ability, cell cycle progression, migration, and invasion of A172 and LN18 cells in vitro, and promoted apoptosis rate. Allied with those were decreased B cell lymphoma-2 (Bcl-2), matrix metalloproteinase-2 (MMP2) and MMP9 expression, and elevated Bcl-2-associated X protein (Bax) level. According to dual-luciferase reporter assay and RNA pull-down assay, miR-370-3p was identified to be targeted and sponged by circCLSPN, and further targeted and negatively regulated USP39. Functionally, overexpressing miR-370-3p could mimic in vitro effects of circCLSPN interference. Rescue experiments revealed that blocking miR-370-3p could partially reverse the suppression of circCLSPN knockdown on cell growth, migration and invasion, and role of miR- 370-3p overexpression was abrogated by restoring USP39. In vivo, circCLSPN knockdown hindered tumor growth of LN18 cells by affecting miR-370-3p, USP39, MMP2 and MMP9 expression. In conclusion, circCLSPN elicited an oncogenic role in tumorigenesis and malignant progression of human GBM cells through circCLSPN-miR-370-3p-USP39 pathway.To unveil current medical and psychosocial conditions of patients with West syndrome in Japan.
A cross-sectional analysis was performed in patients with West syndrome registered in the Rare Epilepsy Syndrome Registry (RES-R) of Japan. Furthermore, new-onset patients registered in the RES-R were observed prospectively and their outcomes after one and two years of follow-up were compared with data at onset.
For the cross-sectional study, 303 patients with West syndrome were included. Seizures (such as spasms, tonic seizures and focal seizures) occurred daily in 69.3% of the patients at registration. Seizure frequency of less than one per year was observed in cases of unknown etiology (22.6%), genetic etiology (23.8%) and malformation of cortical development (MCD; 19.1%). Neurological findings were absent in 37.0%, but a high rate of abnormality was seen in patients with Aicardi syndrome, hypoxic-ischemic encephalopathy (HIE), genetic etiology and MCD other than focal cortical dysplasia, accompanied by a &amp;ll as intractable seizures, in patients with West syndrome. More than a half of the children showed developmental delay after onset, even though seizures were reduced during the course of the disease.Vesicular neurotransmitter transporters (VNTs) mediate the selective uptake and enrichment of small-molecule neurotransmitters into synaptic vesicles (SVs) and are therefore a major determinant of the synaptic output of specific neurons. To identify novel VNTs expressed on SVs (thus identifying new neurotransmitters and/or neuromodulators), we conducted localization profiling of 361 solute carrier (SLC) transporters tagging with a fluorescent protein in neurons, which revealed 40 possible candidates through comparison with a known SV marker. https://www.selleckchem.com/products/xl092.html We parallelly performed proteomics analysis of immunoisolated SVs and identified seven transporters in overlap. Ultrastructural analysis further supported that one of the transporters, SLC35D3, localized to SVs. Finally, by combining metabolite profiling with a radiolabeled substrate transport assay, we identified UDP-glucose as the principal substrate for SLC35D3. These results provide new insights into the functional role of SLC transporters in neurotransmission and improve our understanding of the molecular diversity of chemical transmitters.